Some Retrobikes passing through Bikeworkshop in Bristol

[Frankenorange]

If the bb is an inch higher, the centre of mass is (almost) too as the average rider weighs almost 10x the bike.
My most comfortable bikes i ride all the time have low bb, including the TiBride

I know that is how it works but i personally do not believe 1 inch makes any real difference that can be felt. What can be felt is more in the mind like the magical differences some people feel between the same spec tubing from different manufacturers. Comfort can be felt and maybe this is what is being experienced and not a balance thing to do with CofG. That is just my opinion and how it feels to me though.

 

[MattiThundrrr]

To my thinking, the number that defines frame handling more than bb height, is bb drop.

BB height can be changed with tire height, as you did by switching to 700, but the distance from axle level to bottom bracket will remain constant.

 

[highlandsflyer]

I know that is how it works but i personally do not believe 1 inch makes any real difference that can be felt. What can be felt is more in the mind like the magical differences some people feel between the same spec tubing from different manufacturers. Comfort can be felt and maybe this is what is being experienced and not a balance thing to do with CofG. That is just my opinion and how it feels to me though.

One inch may not immediately be obviously felt, but how about four? Where is the line? I certainly notice the difference in clearance, given similar drivetrains.

 

[bikeworkshop]

To my thinking, the number that defines frame handling more than bb height, is bb drop.
View attachment 989281
BB height can be changed with tire height, as you did by switching to 700, but the distance from axle level to bottom bracket will remain constant.

The bb drop has also been reduced by around 10mm as the fork is 20mm longer than the original p2

It's one (or 2) of those things that definitely has a part to play in how much an owner loves his bike
- but the best bike ever is the one you're actually riding